| | Journal (article/letter/editorial) |
band consists of a chilled deposit of fine-grained albite, near oligoclase The follorving band consists chiefly...some intergrown albite and muscovite. The succeeding bands consist of muscovite and albite (cleavelandite)...progressive fractionation of single injections of pegmatite magmas separated in time and space.The injections...rock, except in one case where a soda-Iithia pegmatite magma was injected along the foot-rvall schist...schist contact of an earlier potash type of pegmatite. There is no evidence to indicate that any of the magmas |
| | Journal (issue) |
Number 2 December 1997 ISSN 1323-7640 CONTENTS Page Feature Articles: The Coolgardie pegmatite field...South Australian M11se11111 Saddlebackite, Pb2Bi2Te 2 S3, a new mineral species from the Boddington gold...address all correspondence to: The Editor, AJM C/o Department of Mineralogy Museum of Victoria P.O. Box 666E...90. Vol 3. No 2, December 1997 'l{ptes from the, 'Editor INDEX The Index to volume 1 & 2 is inserted...rockhounds.com/leregne. BACK ISSUES & REPRINT OF ISSUE No.1. Due to popular demand the first issue of AJM has |
| | Journal (article/letter/editorial) |
AGE OF THE URANINITE FROM THE McLEAR PEGMATITE NEAR RICHVILLE STATION, ST. LAWRENCE COUNTY, NEW YORK...College,Northampton, M assachusetts. The Mclear pegmatite, which was discoveredin 1907, is lccated in the...property has been temporarily closed down. The pegmatite occurs in highly metamorphosedlimestone of the...In 7929the writer2 made a detailedstudy of the pegmatite but did not at that time observe the occurrence...number of specimens,on the dump from shaft number 2, containing small black mineral grains. These were |
| | Report (volume) |
Committee on Scientific and Cultural Cooperation, Department of State UNITED STATES GOVERNMENT PRINTING OFFICE...OFFICE, WASHINGTON : 1950 UNITED STATES DEPARTMENT OF THE INTERIOR Oscar L. Chapman, Secretary GEOLOGICAL..._-____________--_--_-__-_-_-_-__---__-_. Layers of weathered pegmatite._____________________________ Distribution of...pocket 15. Cruzeiro mica mine (Minas Gerais), No. 1 pegmatite, Toquinho workingS-___---___-_____-_-_______---_--_---In...zoning in the Borges pegmatite and segregation patches in the Levindo Alferes pegmatite, Minas Gerais___ |
| | Book |
with Gamsberg 11 lnselberge, Helmeringhausen 2 AiAiba 3 Rail ay station Garub near Aus Nature...the southern Atlantic Ocean, is at first glance by no means a paradise. However, the harsh Namibian environment...glance • The localities are arranged from North by no means a paradise. However, the to South. harsh...Ko/oniaf-Lexikon Kaokoveld sawexpeditions byGeorgHart(1920), Vo/.2,p.465). mann,miningengineer JuliusKuntzandC. The ...of Kimberlite ("blue ground") in the Gibeon area. No diamonds were however found here and the company |
| | Report (issue) |
Pegmatite Investigations 1942-45 New England By EUGENE N. CAMERON and OTHERS GEOLOGICAL SURVEY PROFESSIONAL...PRINTING OFFICE, WASHINGTON : 1954 UNITED STATES DEPARTMENT OF THE INTERIOR Douglas McKay, Secretary GEOLOGICAL...______________________________________ _ Location of pegmatite districts ___________________ _ Previous work...Acknowledgments ______________________________ _ History of pegmatite mining inN ew England _______ _ Mica mining _...deposits _______________________ _ Geology of the pegmatite districts of Maine __ :. . _____ _ Metamorphic |
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............................................. 2 2 2 3 3 GEOGRAPHIC FEATURES ................................................................ Victor No. 2 prospect ......................................................................... Moberg Tunnel No. 2 prospect ......................................................................................... No Agua mining district .............................................................................. No Agua perlite deposit ........................... |
| | Report (issue) |
in part in cooperation with the North Carolina Department of Conservation and Development and in part in...in part in cooperation with the North Carolina Department of Conservation and Development and in part in...PRINTING OFFICE, WASHINGTON : 1968 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL...Pecora, Director Library of Congress catalog-card No. OS 67-295 For sale by the Superintendent of Documents...Pine district-_____ ________________________ Pegmatite. __________________________ Geology Continued |